Study On Speed Sensorless SVM-DTC System Of PMSM
ABSTRACT
A novel speed sensorless direct torque control system-SVM-DTC
of permanent magnet synchronous motor (PMSM) based on SVM and MRAS is
presented. In this paper the various components of the speed sensorless SVM-DTC
and the principle of realization are discussed in detail. Finally the
simulation results with the application of MATLAB/SIMULINK show that the speed
identification algorithm is accurate and of robustness, moreover, the whole
control system has good static and dynamic performances.
KEYWORDS:
1.
Permanent magnet synchronous motor (PMSM)
2.
Space Vector Modulation (SVM)
3.
Direct torque control (DTC)
4.
Model reference adaptive system (MRAS)
SOFTWARE: MATLAB/SIMULINK
BLOCK DIAGRAM:
Fig.1. Speed-sensor less SVM-DTC
diagram.
CONCLUSION:
In
this paper, the speed sensorless SVM-DTC system based on SVM and MRAS is
presented and the control system has a clear control principle and structure. Simulation
results show that the speed identification algorithm can estimate accurately
the real speed and has robustness to varying of stator resistor. Moreover the
speed sensorless SVM-DTC system has good static and dynamic performance.
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[2]
Liang yan, Li Yongdong. The state of art of sensor-less vector control of
PMSM[J]. Electric Drive,2003,33(4):4-9
[3]
Young Sam Kim, Sang Kyoon Kim,Young
Ahn Kwon.MRAS Based Sensorless
Control of Permanent Magnet Synchronous Motor[C]. SICE Annual Conference,
Fukui, Japan, 2003:1632-1637
[4]
Li Yongdong. AC motor digital control system [M]. Beijing: Machine Press,2002
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